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Ew AST - REGULA .�N GU/DANCE VALUAnON Department of Toxic Substannes Control CAR WASH SEDIMENTS (RG Document NII;Revision Nl; Revision Dur:August 19, 1993) The Department does not expect sediments long as the contaminants, equipment, and processes generated from the external washing of vehicles to used to generate the wastestream remain constant. exhibit a characteristic of a hazardous waste. The specific constituents likely to be present in a However, the washing of car engines with wastestream will depend on the type and level of degreasing chemicals could contribute hazardous contamination on the motor vehicles or machinery Constituents to the sediment waste such that the washed and the detergent or solvent used in the sediment could exhibit a hazardous characteristic. process. Since most engines will be coated with Those generators who generate sediment from the motor oil which has leaked through engine seals, degreasing of engines should evaluate their waste the contaminants typically present in used motor oLl using Chapter 11, Division 4.5, Title 22, California (such as beavy metals) will probably be present in Code of Regulations (22 CCR) criteria for the degreasing sediment. Additionally, the identifying hazardous wastes. sediment may exhibit the characteristic of acute aquatic toxicity which can be determined by After an analysis of the car wash sediment performing the aquatic bioassay procedure generated from the degreasing of engines is referenced in section 66261.24(a)(6), 22 CCR. properly completed, the results will be valid as See Also: No other references. Pursuant to Section 66262.11,Title 22,California Code of Regulations Q2 CCR), it is use generator's respoavba ty to determine if bs waste is harardous or mnharardous by testing representative samples of the waste using the methods set forth in Chapter 11,Division #' 4.5,22 CCR and/or applying Imowledge of the hazardous characteristics of the wane m light of the materials or processes used to generate the waste. If the waste exhibits any of these charactetistia,it is classlned u■lsazsrdous wale and must be mamged as tact The classification of wastes is not to be confused with the establishment of cleanup levels. Waste classifntion delermioes only whether a waste must be ma-- ed as a hazardous waste. To obtain further documents relating to the sampling and classination of wastes,n^_ the waste evaluation belpliue at(916)722-7676. Copies of Division 4S,Title 22,California Code of Regulations are available at moc Public libraries which contain a government Publications section or are available for purchase by calling Barclays law Publishers r. (416)2446611. Ca/flotnia Environments/Protection Agency Office of Scientific Affairs Department of TodC SobstanceS COMM/ waste Evaluation Unix P . O . Boz 806 , Sacrarn.enIo California 95812 - 0806 Page I1